noun, plural cha·la·zas, cha·la·zae [kuh-ley-zee] /kəˈleɪ zi/.
Zoology. one of the two albuminous twisted cords which fasten an egg yolk to the shell membrane.
Botany. the point of an ovule or seed where the integuments are united to the nucellus.
Origin of chalaza
1695–1705; < New Latin < Greek: hail, lumpRelated formscha·la·zal, cha·la·zi·an [kuh-ley-zee-uh n] /kəˈleɪ zi ən/, adjective
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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Historical Examples of chalaza
British Dictionary definitions for chalaza
noun plural -zas or -zae (-ziː)
Derived Formschalazal, adjective
one of a pair of spiral threads of albumen holding the yolk of a bird's egg in position
the basal part of a plant ovule, where the integuments and nucellus are joined
Word Origin for chalaza
C18: New Latin, from Greek: hailstone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Plural chalazae (kə-lā′zē) chalazas
One of two spiral bands of tissue in an egg that connect the yolk to the lining membrane at either end of the shell.
The region of a plant ovule that is opposite the micropyle, where the integuments and nucellus are joined.
The American Heritage® Science Dictionary
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